The Upside Down Pyramid

I noticed several groups of people sitting on walls.  The organization of the groups seemed to me to be balanced and create two levels of folks.... the two guys and the couple.  Nothing special, but I took the shot.  When I got it home, I noticed that the activities of this frozen moment, were a bit odd.  

The guy on the right, has an expression kind of like Jim Carrey uses in some movies.  And, the couple seem to be listening to the book.  This was a errant freeze, and didn't represent what was going on in real life, but still a bit interesting.  It's these kind of odd moments that can lead to interesting street photography shots.  Although, I will just say this one was odd.  

A second shot, shows more of what I originally saw when I noticed the scene.  In this case, there was one addition that filled in the composition.  A guy appeared where the book had been.  (Also, the Jim Carrey guy looked normal).  So, this added a third dimension and completed, the Upside Down Pyramid.